Dental appliance



FIG. 1 is a top-front perspective view of a dental appliance showing thenew design;

FIG. 2 is a front plan view thereof;

FIG. 3 is a rear plan view thereof;

FIG. 4 is a left plan view thereof;

FIG. 5 is a right plan view thereof;

FIG. 6 is a bottom plan thereof; and,

FIG. 7 is a top plan thereof.

The broken lines shown in the drawings form no part of the claimeddesign.

CLAIM The ornamental design for a dental appliance, as shown anddescribed.